Question

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Linear Models Quick Check
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Question
Use the image to answer the question.

Four points are plotted on a coordinate plane, and a line is graphed through them. The x-axis is labeled Days and ranges from 0 to 600 in increments of 20. The y-axis is labeled Weight in Pounds and ranges from 250 to 2,500 in increments of 250.
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An elephant calf is born weighing 282 pounds and gains about 2.5 pounds each day for its first year of life. After one year, the calf weighs approximately 1,195 pounds. The graph represents the line of best fit for the data. Which of the following interpretations of the slope is accurate?

(1 point)
Responses

The calf gains 737 pounds over 182 days.
The calf gains 737 pounds over 182 days.

The calf gains 365 pounds in 913 days.
The calf gains 365 pounds in 913 days.

The calf gains 5 pounds every 2 days.
The calf gains 5 pounds every 2 days.

The calf gains an average of 1,195 pounds over one year of life.

Answer 1

"The calf gains 5 pounds every 2 days."

Reason: The slope is about 2.5 pounds per day ( (1195 − 282) / 365 ≈ 2.5 ), which is equivalent to 5 pounds every 2 days.